86982605 has 4 divisors (see below), whose sum is σ = 104379132. Its totient is φ = 69586080.

The previous prime is 86982601. The next prime is 86982611. The reversal of 86982605 is 50628968.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63138916 + 23843689 = 7946^2 + 4883^2 .

It is not a de Polignac number, because 86982605 - 2² = 86982601 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86982601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8698256 + ... + 8698265.

It is an arithmetic number, because the mean of its divisors is an integer number (26094783).

Almost surely, 2^86982605 is an apocalyptic number.

It is an amenable number.

86982605 is a deficient number, since it is larger than the sum of its proper divisors (17396527).

86982605 is a wasteful number, since it uses less digits than its factorization.

86982605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17396526.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 86982605 is about 9326.4465365969. The cubic root of 86982605 is about 443.0752283720.

The spelling of 86982605 in words is "eighty-six million, nine hundred eighty-two thousand, six hundred five".